-- Copyright (c) 2007 Maksym Motornyy <mmotorny@gmail.com>
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-- THE SOFTWARE.

module HPython.ParserTokens where

import Data.Complex
import HPython.Lexer
import Text.ParserCombinators.Parsec

token' :: (Lexeme -> Maybe returnValue) -> LexemeParser returnValue
token' _match =
	token
		show
		position
		(\_lexemeAtPosition -> _match $ lexeme _lexemeAtPosition)

indent :: LexemeParser ()
indent =
	token'
		(\_lexeme ->
			case _lexeme of
				Indent -> Just ()
				_ -> Nothing
		)

dedent :: LexemeParser ()
dedent =
	token'
		(\_lexeme ->
			case _lexeme of
				Dedent -> Just ()
				_ -> Nothing
		)

identifier :: LexemeParser String
identifier =
	token'
		(\_lexeme ->
			case _lexeme of
				Identifier _name -> Just _name
				_ -> Nothing
		)

newLine :: LexemeParser ()
newLine =
	token'
		(\_lexeme ->
			case _lexeme of
				NewLine -> Just ()
				_ -> Nothing
		)

keyword :: String -> LexemeParser ()
keyword _name =
	token'
		(\_lexeme ->
			case _lexeme of
				Keyword _otherName | _otherName == _name -> Just ()
				_ -> Nothing
		)

booleanLiteral :: LexemeParser Bool
booleanLiteral =
	token'
		(\_lexeme ->
			case _lexeme of
				BooleanLiteral _value -> Just _value
				_ -> Nothing
		)

integerLiteral :: LexemeParser Integer
integerLiteral =
	token'
		(\_lexeme ->
			case _lexeme of
				IntegerLiteral _value -> Just _value
				_ -> Nothing
		)

floatingPointLiteral :: LexemeParser Double
floatingPointLiteral =
	token'
		(\_lexeme ->
			case _lexeme of
				FloatingPointLiteral _value -> Just _value
				_ -> Nothing
		)

imaginaryLiteral :: LexemeParser (Complex Double)
imaginaryLiteral =
	token'
		(\_lexeme ->
			case _lexeme of
				ImaginaryLiteral _value -> Just _value
				_ -> Nothing
		)

stringLiteral :: LexemeParser String
stringLiteral =
	token'
		(\_lexeme ->
			case _lexeme of
				StringLiteral _value -> Just _value
				_ -> Nothing
		)

operator :: String -> LexemeParser ()
operator _name =
	token'
		(\_lexeme ->
			case _lexeme of
				Operator _otherName | _otherName == _name -> Just ()
				_ -> Nothing
		)

delimiter :: String -> LexemeParser ()
delimiter _name =
	token'
		(\_lexeme ->
			case _lexeme of
				Delimiter _otherName | _otherName == _name -> Just ()
				_ -> Nothing
		)

endOfFile :: LexemeParser ()
endOfFile =
	token'
		(\_lexeme ->
			case _lexeme of
				EndOfFile -> Just ()
				_ -> Nothing
		)
